r2mods/ilspy_dump/ror2_csproj/CubicBezier3.cs

68 lines
1.3 KiB
C#

using System;
using UnityEngine;
[Serializable]
public struct CubicBezier3
{
public Vector3 a;
public Vector3 b;
public Vector3 c;
public Vector3 d;
public Vector3 p0 => a;
public Vector3 p1 => d;
public Vector3 v0 => b - a;
public Vector3 v1 => c - d;
public static CubicBezier3 FromVelocities(Vector3 p0, Vector3 v0, Vector3 p1, Vector3 v1)
{
CubicBezier3 result = default(CubicBezier3);
result.a = p0;
result.b = p0 + v0;
result.c = p1 + v1;
result.d = p1;
return result;
}
public Vector3 Evaluate(float t)
{
float num = t * t;
float num2 = num * t;
return a + 3f * t * (b - a) + 3f * num * (c - 2f * b + a) + num2 * (d - 3f * c + 3f * b - a);
}
public void ToVertices(Vector3[] results)
{
ToVertices(results, 0, results.Length);
}
public void ToVertices(Vector3[] results, int spanStart, int spanLength)
{
float num = 1f / (float)(spanLength - 1);
for (int i = 0; i < spanLength; i++)
{
results[spanStart++] = Evaluate((float)i * num);
}
}
public float ApproximateLength(int samples)
{
float num = 1f / (float)(samples - 1);
float num2 = 0f;
Vector3 vector = p0;
for (int i = 1; i < samples; i++)
{
Vector3 vector2 = Evaluate((float)i * num);
num2 += Vector3.Distance(vector, vector2);
vector = vector2;
}
return num2;
}
}